Poster Session: Development and validation of a virtual reality based toolkit to assess functional vision in Ultra Low Vision.
Poster Session: Development and validation of a virtual reality based toolkit to assess functional vision in Ultra Low Vision.
复制标题
海报会议：开发和验证基于虚拟现实的工具包，以评估超低视力的功能性视力。
DOI：
10.1167/jov.23.11.55
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发表时间：
2023
影响因子：
1.8
通讯作者：
Dagnelie,Gislin
中科院分区：
文献类型：
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作者：
Kartha,Arathy;Sadeghi,Roksana;Swanson,Thom;Gee,Will;Dagnelie,Gislin
超低视力（Ultra-Low Vision，ULV）是指视力低于20/1600的人。有越来越多的视力恢复治疗，招募ULV患者或将视力恢复到ULV水平。目前，有限的标准化结果测量可用于评估这种视力恢复治疗前后的视力潜力。ULV工具包是为ULV患者开发的标准化结局措施。开发了三个基于虚拟现实（VR）的模块来评估ULV患者的视觉信息收集、手眼协调和寻路能力。每个模块都包括一系列与日常生活活动相关的视觉引导任务（例如，汽车的运动方向，打开电灯开关，登上火车）。每个正确/不正确的回答评分为“1”/“0”。然后分析这些原始分数以估计项目难度（项目测量）和个人能力（个人测量）。项目测量显示了广泛的难度水平，可用于评估ULV患者的视觉表现。人的措施与估计logMAR视力以及完成率，碰撞次数和反应时间。这项研究填补了ULV领域的一个巨大空白，该领域对日常生活活动中的视觉潜力和有用性知之甚少。VR为ULV参与者的测试提供了可移植性和一致性，从而允许在视力恢复研究中实现测量标准化。
Ultra-Low Vision (ULV) refers to a level of vision that is≦ 20/1600. There are a growing number of vision restoration treatments that recruit people with ULV or restore vision to the ULV level. At present, limited standardized outcome measures are available to assess visual potential before and after such vision restoration treatments. The ULV toolkit was developed as a standardized outcome measure for people with ULV. Three virtual reality (VR) based modules were developed to assess visual information gathering, hand-eye coordination and wayfinding in people with ULV. Each module consisted of a range of visually guided tasks related to activities of daily life (eg, direction of motion of cars, flipping a light switch, boarding a train). Each correct/incorrect response was scored as ‘1’/‘0’. These raw scores were then analyzed to estimate item difficulty (item measure) and person ability (person measure). Item measures showed a wide range of difficulty levels that can be used to evaluate visual performance in people with ULV. Person measures were correlated with estimated logMAR visual acuity as well as completion rates, number of collisions and reaction times. This study bridges a big gap in the field of ULV where little is known about visual potential and usefulness in activities of daily life. VR provides portability and consistency for testing across participants with ULV thereby allowing for standardization of measurements across vision restoration studies.